From b5b64fa6cd6bd053db2b89a41792597d08913036 Mon Sep 17 00:00:00 2001
From: Wenyou Yang <wenyou.yang@atmel.com>
Date: Fri, 7 Nov 2014 08:48:13 +0800
Subject: [PATCH] mmc: atmel-mci: adopt pinctrl support

Amend the atmel mci pin controller to optionally take a pin control
handle and set the state of the pins to:
- "default" on boot, resume and before performing an transfer.
- "sleep" on suspend().

This should make it possible to optimize energy usage for the pins
both for the suspend/resume cycle.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
---
 drivers/mmc/host/atmel-mci.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index 4df1599583f8..a7b59ba399a1 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -39,6 +39,7 @@
 #include <linux/atmel_pdc.h>
 #include <linux/pm.h>
 #include <linux/pm_runtime.h>
+#include <linux/pinctrl/consumer.h>
 
 #include <asm/cacheflush.h>
 #include <asm/io.h>
@@ -2568,6 +2569,8 @@ static int atmci_runtime_suspend(struct device *dev)
 
 	clk_disable_unprepare(host->mck);
 
+	pinctrl_pm_select_sleep_state(dev);
+
 	return 0;
 }
 
@@ -2575,6 +2578,8 @@ static int atmci_runtime_resume(struct device *dev)
 {
 	struct atmel_mci *host = dev_get_drvdata(dev);
 
+	pinctrl_pm_select_default_state(dev);
+
 	return clk_prepare_enable(host->mck);
 }
 #endif
-- 
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